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\begin{document}

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	\begin{table}[ht]
	\caption{Descriptive statistics}
	\label{tab:desc}
	
	\begin{tabular*}{\textwidth}{l @{\extracolsep{\fill}} ccccccccc} \hline 
		& \multicolumn{3}{c}{Sample frame} & \multicolumn{3}{c}{Nonrespondents} & \multicolumn{3}{c}{Respondents} \\
		& Mean & Sd & N & Mean & Sd & N & Mean & Sd & N \\ \hline 
		Age (years)                    & 46.2 & 16.3 & 3,144 & 44.1 & 16.3 & 1,510 & 48.1 & 16.0 & 1,634   \\ 
		Elementary School (\%)         & 26.4 & 44.1 & 3,107 & 31.6 & 46.5 & 1,497 & 21.8 & 41.3 & 1,610   \\ 
		High School (\%)               & 10.4 & 30.5 & 3,107 & 11.5 & 32.0 & 1,497 &  9.4 & 29.2 & 1,610   \\ 
		Vocational training (\%)       & 33.0 & 47.0 & 3,107 & 34.4 & 47.5 & 1,497 & 31.8 & 46.6 & 1,610   \\ 
		Short/mid-cycle edu. (\%) & 21.8 & 41.3 & 3,107 & 16.7 & 37.3 & 1,497 & 26.2 & 44.0 & 1,610   \\ 
		Long-cycle education (\%) 	   &  8.4 & 27.8 & 3,107 &  5.7 & 23.2 & 1,497 & 10.8 & 31.0 & 1,610   \\ 
		Female (\%)                    & 49.4 & 50.0 & 3,144 & 50.4 & 50.0 & 1,510 & 48.6 & 50.0 & 1,634   \\ 
		Native Dane (\%)               & 95.0 & 21.8 & 3,144 & 93.9 & 25.0 & 1,510 & 96.5 & 18.4 & 1,634   \\ \hline 
	\end{tabular*} 
\end{table}
	
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